Fan for cooling explosion-engines.



E. v. GROSTON.

' PAN m 000mm EXPLOSION'ENGINES.

APPLICATION FILED MAR. 31, 1908.

Patented Feb. 2, 1909.

g; 1,1,1"; VIII'I/I'I'Ill'lllll Elmwutoz ZZZ 67205704.

, g, No. 911-,82.

' citizen of the United States,

nITED srntrns "PATENT OFFICE.

EDWIN v. cnosfroju, or Baa-Ann; NEBRASKA" FAN son. coonmenxr'nosron-nneznns.

To all whom it concern; 1 Be it. known; that. 11', EDWIN. Y. OnosroN,residing at Hazard, in the countyfof Sherman and" State of Nebraska,have invented certain newtand useful-1m rovem'ents Fans :for CoolingExplosionngine's'ynf which the following is a specification;

This invention comprehends certain new and useful improvements in meansfor cooling and keeping free from dust the cylinder andother-workingarts of internal combustion engines, ant the invention has for itsobject a simple, durable and efiicient construction of fan for thispurpose, the invention consisting in certain constructions hereinafterfully describeand claim.

and arrangements of the'parts that I shall For a full understanding of treference is to' be had to the ollowingdescription and accompanyingdrawings, in"

which: i

, reference characters.

bustion engine, 2 the crank shaft thereof, and

3 the pitmanconnected'to said crank shaft and alsoconnected to thepiston working in the cylinder 4-.f='.' 5 designates a jacket whichincasesthe said .ey-linder vided at one end, the cylinder wit and whichis propreferably the outer endof' a. horizontally-disposed flan e '6;The flange 6- supports and v is .rigi y eomieeted by bolts 01' the liketo a x corresponding flange? formed on thedownprojecting leg 8 of,a'fan] casing 9;

nates the central. eyes of said r e for theadinission ofairintgihe same;

fan casing 9 is provided posite sides with journal brackets 1 in ilshaft 12 is journ'aled. id fan shaft-oarries any deslred nu ber of.radiall extend-- ing arms 13 within ti ie casing, and an blades -14 aresecured to said arms so as to create a suction into theeye -10 of thefan when the shaft rotatesso as to set .up air currents around thecylinder 4 whereby to seamen;

Specification of Letters Ba'tent.

Applicationfiled March 31, Serial ma. 424,342.

w ch the fan PatentedFeb. 2-, 1 909."

. cool the sameand'keep it free-from dust.

The-shaft l2f ear'ries at one end a relatively heavy fly wh'eel I5 andat its opposite end is ,prov'idedwith a pu'lley 16 connected by a. belt16" to: the; fly-wheel. 1 of the engine or to any other desired Wheel(not shown) on the crank, shaft 2. i g

The drive pulleyv 16 of the fan, shaft is a combination ratchet andfriction drive pulley, the particular construction and arrangement 'ofthe parts thereof being best illus-, 'trated in Fig. -3. In this view,it will be seen that one end of the. shaft 12 carries a set collar 17'which-is keyed thereon as well as, being secured thereto by a set screw.A friction disk 18 of any desired material encircles .the' shaft and .isadapted to bear against said collar, and a secondfi'iction mvention,

disk 19 is mounted on the shaft; spaced from the disk 18, 20 'desi atestwo friction sgools'that are mounte .on the shaft within 1;

e hub of'the pulley 16 and which are preferabIy arranged forinterlocking engage-v ment with each other as shown, one of thesepulleys being adapted to bear frictionally against the friction disk 18and thewgither I being formed withlrecessesat its oute'lr end desifiledfor engagement by .one or more paw 21 that are preferably gravityactuated and that are carrled'in one end ofthe pulley which, is ada tedto bear against the friot'on disk d which is splined onthe shaf 12 for16. 23 designates a friction washer 19v an a longitudinalshdingrmovement th reon, and a spring 24 bears against said washer toholdit against the disk 19., the other ehid ofsaid sprin bearing againsta set collar 25 keyed on t e shaft or adjustably held-there r on bymeans of a set screw as shown.

From the foregoing description in con- ,nection with the accompanyingdrawing,

it will be evident that when the. engine starts, all jerking of the fanshaft 12 is avoided, owing tothefact that the spools 20 will first slidefrictionally around in contact with thefrictional disks 18 and 19;'untilthe spring 24 shall have exerted its tension to pickup the motion and toovercome the torque of-thefly-wheel 15 and fan blades carried by saidshaft. ,Hence the motion of the main. engine shaft will be imparted Igradually to the fan shaft without any shock,

and consequent injury to the parts, and it is .manifest that a relsgziyely heavy fly-wheel 1 may be .therefor employed on the fan shaft-12,so that the momentum thereof will What is claimed as new is:

impart a continued movement to the fan shaft, the connectionbetweenthedrivepulley blades, even after the main engine has been i andthe fan shaft embodying afriction s 001 brought to a standstill. mountedon the shaft, a spring pressed ric- Having thus described the invention,tion disk adapted to bear against'one end of said spool, and awlscarried by the drive pulley, said spoo being formed with ratchet notchesdesigned to receive said pawls.

In testimony whereof I afiix my signature presen'ce of two witnesses.

EDWIN V. OROSTON. [L. s.]

Witnesses:

FRED CAPELLEN, EDWARD V. N EWCOMER.

In cooling means for engines, the combination with the cylinder andshaft of an engine, of a jacket incasingsaid cylinder, l a fan casingsecured to and su ported by l in said jacket, a fan shaft journa ed insaidl casin a fly-wheel mounted on one end of I said tan shaft and adrive pulley mounted l on the other end of, said fan shaft and hav- I'ing a driving connection With the engine!

